MSPS Service Provider Underwriting 
Stax
JUNE 17, 2025
Contact sales ISOs vs MSPs: What’s the Difference? ISOs are often mentioned in the same breath as MSPs (Member Service Providers), and for good reason—they’re nearly identical in function. Mastercard uses the term Member Service Provider (MSP) for the same type of entity.
Clearly Payments
DECEMBER 9, 2023
Through their robust services, acquirers contribute significantly to the efficiency and security of financial transactions. ISOs: Bridging Acquirers and Merchants Independent Sales Organizations (ISOs) or Merchant Service Providers (MSPs) operate as indispensable intermediaries, bridging the gap between acquirers and merchants.
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Exact Payments
NOVEMBER 8, 2023
Key Takeaways: Payment facilitators are merchant service providers that enable merchants to process payments electronically. Unlike traditional merchant service providers that resell payment processing, PayFacs own processing accounts and underwrite and onboard sub-merchants under their accounts.
Exact Payments
OCTOBER 30, 2023
There are several entities and technologies that interact in order to facilitate the transaction process, including: Payment processors Payment processors are service providers that operate as intermediaries between the customer’s bank and the merchant’s bank.
Clearly Payments
DECEMBER 5, 2023
The Definition of a Payment Processor A payment processor is a financial service provider that facilitates transactions between a seller (merchant) and a customer. ISOs (Independent Sales Organizations) or MSPs (Merchant Service Providers) ISOs, or Independent Sales Organizations , act as intermediaries between merchants and acquirers.
PYMNTS
MARCH 11, 2020
Connor noted that historically, acquiring was centered around indirect sales channels, through independent sales organizations (ISOs) or merchant service providers (MSPs). The shift through the last several decades has been from the ISO to a value-added reseller (VAR) referral relationship — and now, to SaaS companies.
Clearly Payments
DECEMBER 1, 2023
In the intricate landscape of payment processing, merchants are confronted with a choice between three types of payment processors: Acquirers, Independent Sales Organizations (ISOs or MSPs), and Aggregators (PSPs or PayFacs). An ISO is what Visa calls their approved merchant account providers and an MSP is what MasterCard calls them.
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